Radar detecter alternatives. Techie input needed

[Ixion]

*DISCLAIMER* Any police type persons reading this please note. The whole of this post is totally hypothetical. I, personally, would never dream of exceeding any speed limit. Nor would anyone else in this group. Purely a hypothetical exercise about what *other* people might do, none of whom are anything to do with this group. Or me. I never speed . Ever. Honest. So I would have no use for what I am talking about. Except as a purely intellectual exercise.

Now that we've got that out of the way.

As we all know, a good radar detecter is pretty much essential for anyone who might (unlike me) occassionally, purely inadvertantly, allow their speedometer to go round to figures that it ought not to (Not that mine ever does . I am renowned as the most nanaish rider around. Small children run out to point as I pootle past and cry "Look there goes nana". So none of this applies to me. Don't come looking for me)

But, with the new stalker and instant on and such like, radar detecters are having a hard time detecting in time to be of any use

Now, I'm sure that the radar detecter makers are working on this. But probably won't have any good answers in the short term

However (bear with me this is where it gets more interesting), it occurs to me that radar detectors may often actually be over kill.

In my case , if I were going to speed (WHICH I NEVER DO - see disclaimer above. Wouldn't ever dream of it) , but if I hypothetically were going to, it would be in a lonely-ish place, where there was not a lot of other traffic.And in such a place, all I want to know is that there is no Mr Plod within 5 km or so. If I know that Mr Plod is lurking anywhere near I will stick to the limit (AS I ALWAYS DO ANYWAY. Hypothetical, remember)

So , hypothetically, if I had some way of just knowing that there is a police car/bike in the area, that's all I need to know. I will assume he is using radar (not that it would worry me, you understand, on account of I never speed) .

The new radars are too hard to pick up in time. But a police car has a whole bunch of other radio stuff in it. All the comms stuff.

I know that scanners can pick that up. So, my question for you radio techie folk (I know there's a few of you on the group), is, could a scanner be modified so as to flash a light or something, if it detected activity on a known police band within say , 5 km. We know what the police frequencies are (I think). And it wouldn't really matter if they were scrambled, because all I want to know ( hypothetically) is that someone close by is using the police frequency , I don't care what they are saying (Not that i really want to know anyway, because I never speed. This is purely hypothetical. Hypothetical, that's what it is )

Or is there such a gadget existing already. Or have I totally got the wrong end of the (hypothetical) stick,and there is a insurmountable problem with my theory.

Of course such a warning device (which I have no need for and if I did have one it would be out of scientific interest only) would be no use in built up areas, where there are bound to be Plods within range. But that's OK because I think that anyone who speeds in built up areas is asking for it anyway. (Not that I would ever speed in any area at all, because as everyone knows I am the original nana, and never go fast at all )

Anyone want to comment on the idea of a general Plod detector ? (on a purely hypothetical basis of course, because no-one in this group would actually have any need for such a device)

Or offer meaningful technical insights ?

[zeRax]

weaker powered scanner as to only pick up radio thats close by? *starts thinking*, problem is will it show up if they arent talking on it, or could you transmit onto that channel and pick up anything thats recieved it in close proximity


argh, someone super start thinking ;D

[Quasievil]

wow thats a big read.
Now my answer, SASlex where is your techo arse

[Jeremy]

Sure it wouldn't be hard to find someone who was broadcasting at the police frequencies but it'd be much harder to pick up someone who was listening.

Also there's going to be on another problem. Once you reach those sorts of speeds you have to take into the account a quite severe doppler effect. And I'm not sure how isolated the police bands are, however if there's other stuff around them then it's going to be a real pain adjusting the frequency detection.

Theoretically it is possible to detect if someone is listening into a certain frequency but it's not an easy of a feat. It is entirely possible though. The Japanese did it during WW2 to pick up US forces.

This is going to cause a problem though, as trying to listen into people listening into a radio signal will also mean that you start to pick up people who are trying to do the same thing. Thus it's only useful when only a small number of people have these devices. Also the police would then start to put resonate blockers in their antenne like the US did, so it won't be useful for very long.

[ManDownUnder]

OR

... we sneak up to ye 'old Police Car/bike/mode of vehicular transport... and stick a teenie weenie transponder onto it...

It only has to do a sputnik and ping on a known frequency...

after that we can pick 'em up for ourselves. Course it would turn us into a bunch of perverts (perverting the course of justice) but then I believe a number of us... errmm... you... already are!

...?

[Ixion]

OR

... we sneak up to ye 'old Police Car/bike/mode of vehicular transport... and stick a teenie weenie transponder onto it...

It only has to do a sputnik and ping on a known frequency...

after that we can pick 'em up for ourselves. Course it would turn us into a bunch of perverts (perverting the course of justice) but then I believe a number of us... errmm... you... already are!

...?

Interesting thought. Given that it's really only a handful that we (oops, a hypothetical group of people, NOTHING TO DO WITH ANYONE HERE) have problems with.

Transponders is cheap. So it's just a matter of figuring out how to attach them. Not sure that it would be breaking any law. After all, none of us have any reason to avoid Mr Plod .

[Sniper]

Hypothetically speaking (of course) you could create a signal burst via the detector to pick up any police activity (if you did accidentaly speed) that could confirm the locality of police personall within a 5km radius.

This is possible if you know the band and also know how to send a signal burst (kind of like a ping for you who know computers) but being the law abiding person I am, I do not (hypothetically) have a way to do that.

[Blackbird]

Talk about dancing around the subject, haha :ride:

(Oh, good afternoon!)

I have a relatively cheap detector I bought from Trademe.com for $150 and this will pick up most police activity at up to 3 km. Probably even more importantly, it will pick up camera vans from several hundred metres. Looking at the whole thing pragmatically, police are no different from the rest of the human race (inclined to be lazy) and leave their detection systems on most of the time and the fact that they give other traffic ahead of you a burst usually gives the game away. Always a bit more of a risk when you're on your own. :confused:

Take the easiest approach rather than trying to develop something else (oh, that's right, you're in I.T:msn-wink:) If you don't want to lay out a fortune, buy a Uniden LRD2000 Stalker. These are far better than the later models which were built to a component price to accomodate all the extra features.

[Ixion]

From one of the scanner maker's catalogues


The all-new BearTracker BCT8 is a significant upgrade over the 7 in many ways,foremost of which is the addition of Uniden's unmatched TrunkTracker III technology.
...
Additionally the scanner alerts you to the presence of many state police and
highway patrol cars in a 1-3 mile radius that are using mobile-extender radios
with its unique alert feature.

[Ixion]

..
I have a relatively cheap detector I bought from Trademe.com for $150 and this will pick up most police activity at up to 3 km. Probably even more importantly, it will pick up camera vans from several hundred metres. ..

Take the easiest approach rather than trying to develop something else .. If you don't want to lay out a fortune, buy a Uniden LRD2000 Stalker. ...

Ahah. Sounds like this might be going somewhere.

Question though, is it possible for these things to have some sort of "wake up" mode, whereby you could tell by means of a light or something that they are picking up stuff. Thing is on a bike you can't really listen (or can you - Bluetooth maybe), so you need some sort of alert signal. I also have a vague notion that the police radio sends a relatively frequent "keep alive" signal back to base - maybe some one can confirm ro deny that

Sounds rather promising though. [goes off to research Uniden Stalkers - be ironic wouldn't it if the answer to the Stalker turned out to be a Stalker]

[Lou Girardin]

Some issues come to mind;
You'll get alerts from every cop transmitting on that freq, that'll drive you nuts in town.
You're faced with the same issues as non-Valentine detestors, ie. where is the cop, ahead or behind or down a side road. With the added uncertainty of whether they have radar or not.
Until effective jammers become available, the best defence against radar is a good detector, used sensibly.

[Ixion]

Some issues come to mind;
You'll get alerts from every cop transmitting on that freq, that'll drive you nuts in town.
You're faced with the same issues as non-Valentine detestors, ie. where is the cop, ahead or behind or down a side road. With the added uncertainty of whether they have radar or not.
Until effective jammers become available, the best defence against radar is a good detector, used sensibly.

Yes, but I don't care in town because I don't speed in built up areas. And if there's more than one cop, all the more reason to slow down. I don't care if he's ahead of me or behind me , or down a side road. I just want to know that he's somewhere near (or, not somewhere near). I don't suggest that such a device would replace a radar detecter, but supplement it

[avgas]

i actually had a talk to a guy who wants to do something like that no so long ago. He reckons using the 3rd harmonic is the key as you loose alot of the low frequency hum from all the other radio channels (rigs, ambulance etc) and the electrics on the bike (leads etc).
Mate had a brilliant jammer once that worked off the KA band (or is it K?) and hid under his seat (2 transmitters, one in the headlight, one in the brakelight). Wouldnt tell me where i could get one though.
what we actually need is something on the cellphone networks that works like a bulletin board - messeging you that you are entering a danger zone.
...that or the road angel system in NZ

[marty]

a low powered ADF tuned to the police radio freq. could work, but they would have to txmit to set it off. the valentine works like this, indicating the direction the pulse is coming from. the police radios do not pulse a 'here i am' signal. some of the highest producing HP cops i know might talk on the radio twice in a shift, so the ADF thing would be useless.

(BIIIG breath) lou is right, although keeping your eyes peeled, watching other driver behaviour (brake lights coming on 1km ahead - camera car?) and keeping off the SH ways are just as important to avoiding the 5-0.

[Lou Girardin]

a low powered ADF tuned to the police radio freq. could work, but they would have to txmit to set it off. the valentine works like this, indicating the direction the pulse is coming from. the police radios do not pulse a 'here i am' signal. some of the highest producing HP cops i know might talk on the radio twice in a shift, so the ADF thing would be useless.

(BIIIG breath) lou is right, although keeping your eyes peeled, watching other driver behaviour (brake lights coming on 1km ahead - camera car?) and keeping off the SH ways are just as important to avoiding the 5-0.

Why, thank you Marty.
And don't forget the first rule of speeding 1ST IN LINE, GETS THE FINE! :buggerd:

[N4CR]

Mate had a brilliant jammer once that worked off the KA band (or is it K?) and hid under his seat (2 transmitters, one in the headlight, one in the brakelight). Wouldnt tell me where i could get one though.

Yeah... exactly what I was going to say. I have the schematics somewhere and I would be keen to try it (involved an auto door radar transmitter with some tuning etc) but I'm a real noob when it comes to this.

When I get home I will find it.

[Skyryder]

or the road angel system in NZ

What's the road angel system??

Skyryder

[TwoSeven]

A military grade scanner (or 3 of them to be precise) is what you need. They are cheap (good ones go for about us$500) and you can attach a pda or laptop to some brands. I think there are rules on what you can import here tho so you may be out of luck on that.

What they do is monitor a wider array of frequencies and bands at the same time (since most military comms use frequency hopping), and the old bill tend to use a fixed number of channels so its pretty easy.

What you need to do is triangulate on signal strength (aka. cell phone triangulation as an example) when a signal is broadcast. You then need to plot that in real time on some form of map (so you'll need to go visit navman for one of their gps map hoodackies).

You could fix two of the scanners in place (perhaps about 5km apart) and use the third on the bike. Cell phones with gprs would enable you to broadcase the signal data to your unit where you'd do the processing.

Now the upgrade for that basic hack would be to make a radio direction finder (ie. what they use to track kiwi and other animals with radio transmitters). So you could mount a directional aerial (like a uhf aerial) on your motorcycle, since you would only need to detect signals coming from the general direction in front of you. How wide that aerial would need to be on your bike would govern what kind of signal and how strong it is you could detect.

http://www.century-of-flight.freeola.com/new%20site/images19/8.gif

I would also suggest painting your bike black (a stealth color) and purchasing some Multi-spectral camouflage paint (go visit SSG-AG in germany). Modify your fairing so that it uses reflective angles - that way when you get pinged, no signal will be returned to the transmitter.

You want to get your front RCS (radar cross section) down to 1mm which would put it beyond all radar systems currently in NZ to detect. The multispectral paint would kill the lazer based pingers.

Just my thoughts :)

[loosebruce]

Alternative to all techy gadgets - 6th gear!! Fifth on some bikes. :whistle: Not that i ever would dream of doing such a thing.

I have a scanner that i use regulary, sits in my backpack with an earphone into my helmet, but you've got almost 35 - 40 frequnices (sp) in auckalnd alone to scan, plus not being able to see what freq you're on at the time while scanning to determine what area it's coming from can be a bugger, sometimes i lock onto central to be safe, but as marty said most of the cops that i "might" have an issue with is the HP and they use the raido sweet f/a, think they have some sort of computer that works like txt or they use their cells mostly.
Really a scanner is only good finding out where shit is going on and where the police are likly to be because of it. Also provides a good laugh every now and then.

I don't have a radar detector, never have, got a speeding ticket here and there but it's mostly best to errr on the side of caution, when you ride heaps you get to know where the police set up camp on motorways (ie on ramps, certain spots on the side of the road, under bridges, on bridges) and roads they police often, how many of you pin it down the ramarama straight? Bit foolish if you do.

Just don't bitch when you pinged for speeding, doesn't matter if there were no other cars around etc etc and all the other bullshit excuses people use, if you going to speed, accept the punishment.

[John]

On that reflection type thingy, get some shiny shiny plastic type stuff (forgot name) and put it over the licence plate, will save you tickets from flashers.

(due to reflection delay etc, so all they see is a white feedback produced by the flash, no matter what - and it is still fine for anyone following directly behind you such as the police and such)

No I dont do this :lol:

[Wonko]

They would have to talk, and normal chatter is work related, ie they have pulled someone and are checking details, or are responding to a callout. therefore your chances of being picked up would be less anyway as they have other business.

Now if all Police vehicles had a GPS system so that HQ would know exactly where they all where, and for ease of deployment etc, and you could tap into that, when then I'd be interested in that system

[loosebruce]

On that reflection type thingy, get some shiny shiny plastic type stuff (forgot name) and put it over the licence plate, will save you tickets from flashers.



You could just do what i did to my number plate :shifty: those that have seen will know what i'm talking bout

[John]

You could just do what i did to my number plate :shifty: those that have seen will know what i'm talking bout
Nah I dont have a number plate they are for chumps :lol:

edit: oh the mysteriously mutated number plate now thats an idea, can even explain to the cobbler about how you wrote the bike off at 200kmph doing a wheelie on public roads :niceone:

[loosebruce]

Nah I dont have a number plate they are for chumps :lol:

edit: oh the mysteriously mutated number plate now thats an idea, can even explain to the cobbler about how you wrote the bike off at 200kmph doing a wheelie on public roads :niceone:

:angry2: Oi she's not written off, running perfectly it is. eh honest. :confused:

[John]

:angry2: Oi she's not written off, running perfectly it is. eh honest. :confused:
Nah, just makes for a much more interesting story ;)

[madboy]

I vote for the LB 6th Gear theory.

Scanners are all good for listening what they're up to WHILE you're being chased, and radar detectors may or may not help you avoid the chase in the first place but there's a fair bit of luck involved in that... and I run a Valentine One and have owned many Unidens and Bels over the years.

Personally, I think the best approach is run an easily removable/relocatible numberplate (I know I've been talking about it for ages, but one day I WILL give around to tilting mine), and every time you see trouble just go down two gears and wait... sometimes you'll be glad to got the revs up ready for a fast launch, sometimes the 5-0 watching will know better. Either way - you are unlikely to get a ticket.

[marty]

They would have to talk, and normal chatter is work related, ie they have pulled someone and are checking details, or are responding to a callout. therefore your chances of being picked up would be less anyway as they have other business.

Now if all Police vehicles had a GPS system so that HQ would know exactly where they all where, and for ease of deployment etc, and you could tap into that, when then I'd be interested in that system

actually, if the driver has his licence, the car is regd and wofd, and it is a simple stop, there is no need to talk on the radio. there's plenty of ghost HP units out there, start and finish at their home address, go into the base once a week, some of them don't even log on with comms until they need something over the radio. in fact, it's the ghost ones that are often the big ticket writers - just out there doing their job, without becoming involved in the politics of it all. saw one of them twice in the weekend, once on SH1 at Te Kauwhta, then again on 1B, both times he had someone stopped. he easily does 40 stops a day - one every 10 minutes or so.

[Wonko]

edit: oh the mysteriously mutated number plate now thats an idea, can even explain to the cobbler about how you wrote the bike off at 200kmph doing a wheelie on public roads :niceone:

The front plate on my cage has an almost 80 degree bend in the middle of it, and is bent slightly down. Has saved me from at least 3 camera tickets over the years. Strange thing is that this year for the first time in 5 years the WOF mentioned it. Under other items it says "Dent in front bumper" :killingme Like I had never noticed it

[Biff]

A bloke down the pub told me that many of the nations police coughiffers may or may not be slowly migrating over to a new radio system soon. A digital one. This 'guy' told me that the system may or be transmitting AVLS (advanced vehicle loaction system, similar to GPS) information, information that is sent by the police vehicle, over the radio system to their respective HQs informing the dispatcher where, within 10 metres, each vehicle is.

Now imagine that you had access to an AVLS/radio decoder..........if only I could remember the 'blokes' name.

[Gremlin]

Lotsa "hypothetical" threads about tech needed if you were "hypothetically" speeding. Lemme get this straight...

- you need a scanner to see if cops are around/what they are saying
- you need a radar jammer to stop err... radar!
- you need a laser jammer to stop laser

how much space is there on a bike?? Soon you might need a sidecar for the tech... :lol:

[Ixion]

..

how much space is there on a bike?? Soon you might need a sidecar for the tech... :lol:

Heaps of space on a BMW!. Might just have to move the microwave over a bit closer to the fridge. Or mount the TV a bit higher .

[Gremlin]

Heaps of space on a BMW!. Might just have to move the microwave over a bit closer to the fridge. Or mount the TV a bit higher .
So your bike goes slow enough to watch a bit of telly then?? :D

The microwave must make the winter-commute-while-having-breakfast comfy

[Legolas]

Originally posted by Biff Baff.
A bloke down the pub told me that many of the nations police coughiffers may or may not be slowly migrating over to a new radio system soon.

This has already happened in Northants, UK. They are supposed to be un-scanable. It works on a similar system to mobile phones, I think. In fact the handset is quite like a mobile with extra features on it.

[Krusti]

I see on one of the American radar sights that sells the Blinder Scrambler etc that they are developing a KA band jammer.....be interesting to see if it works....however it may just create more problems if caught with one!

[Lou Girardin]

I see on one of the American radar sights that sells the Blinder Scrambler etc that they are developing a KA band jammer.....be interesting to see if it works....however it may just create more problems if caught with one!

There's two possibilties with jammers;
1/ It transmits a freq corresponding to a certain speed. In NZ it would have to be 50 km/h, or even less if you include temp speed zones. Now not all cops are dumb enough to think a reading of 30 km/h on the m/way is not suspicious.
2/ The better way is to transmit a freq that shows either no speed or something impossible like 400 k's, then shut off after a few seconds. By then you've slowed and if he zaps you again, you're legal. :ride:

[Timber020]

How about paying some guys on bikes to follow the traffic cops, and have them carry a tracking system that riders can pick up on with a special tranciever (that you rent out with a monthy fee). This is not a system to encourage speeding, but to know where local police are in case you need to ask directions. That way we would all feel more safe.

How hard would it be to stealth up a bike? make it like a b2 bomber.

[Pixie]

Also there's going to be on another problem. Once you reach those sorts of speeds you have to take into the account a quite severe doppler effect. .
What speeds you talkin' 'bout? Relativistic? You have FTL drive on bike?
Do you find time dilation a problem?
"I went out for a ride .When I got home the Apes had taken over Earth!"
Don't think you'll have a problem with doppler effect ,red shift,blue shift etc on a terrestrial vehicle . :killingme

[Pixie]

Interesting thought. Given that it's really only a handful that we (oops, a hypothetical group of people, NOTHING TO DO WITH ANYONE HERE) have problems with.

Transponders is cheap. So it's just a matter of figuring out how to attach them. Not sure that it would be breaking any law. After all, none of us have any reason to avoid Mr Plod .
If you are going to the trouble of attaching transponders to cop cars-stick some composition 4 to the while you are at it.

[inlinefour]

Yea, like don't speed at all...

[FzerozeroT]

I heard a rumour that the motion detectors from house alarm systems could be rigged up as radar jammers?

[Lou Girardin]

They use infra red units as laser jammers in the UK. Don't know how effective they are.
RF units wouldn't work as jammers.

[Flyingpony]

Alternative to all techy gadgets - 6th gear!! Fifth on some bikes. :whistle: Not that i ever would dream of doing such a thing.


sixth at 50km/h :eek: ... engine ticking over slowly at about 4000rpm.
Or
sixth at 100km/h :shit: ... engine ticking over happily at about 8500rpm.

[inlinefour]

sixth at 50km/h :eek: ... engine ticking over slowly at about 4000rpm.
Or
sixth at 100km/h :shit: ... engine ticking over happily at about 8500rpm.

3rd at 50km/h...engine ticking over happily at about 8500rpm. If you can't do that then your a moron(PT) :msn-wink:

[Dafe]

Doppler effect would be no issue at all. Bear in mind that radar waves travel 1 radar mile at 12.36 micro seconds, and radar waves are radio waves. Therefore you would probably need to pull about 5000km per before you'll need to incorporate a doppler adjustment.
I highly doubt that a police frequency receiver would be of any use. Quite simply, Police do not transmit frequently on their radios and if you are considering detecting a vehicle which is listening to police frequencies, it can't be done. Simply because those frequencies you are trying to detect are infact all around you already. A police vehicle will recieve these signals but will not emit any signal of strength that will give a detectable signature. You can definately detect a transmitting vehicle but who would be bothered as that is so infrequent. Your Radar Detector beats these options hands down. Personally, I find Radar Detectors so useless that I just wouldn't bother with them at all. There is only one way to beat Radar - JAMMERS!!!!!!! But they're illegal in NZ as you must be licensed to transmit and also transmissions on police frequencies are highly illegal.

What I do know, Is that Police find it quite abit harder to lock up a motorbike.
How would RAM paint perform on a motorcycle???? (Radar Absorbant Material).

[N4CR]

Found the anarchist cookbook 2000... a little bit of info here (not much help though :confused: )...

Radar jamming by The Jolly Roger.

Most drivers wanting to make better time on the open road will invest in one of those expensive radar detectors. However, this device will not work against a gun type radar unit in which the radar signal is not present until the cop has your car in his sights and pulls the trigger. Then it is TOO LATE for you to slow down. A better method is to continuously jam any signal with a radar signal of your own. I have tested this idea with the cooperation of a local cop and found that his unit reads random numbers when my car approached him. It is suprisingly easy to make a low power radar transmitter. A nifty little semiconductor called a Gunn Diode will generate microwaves when supplied with the 5 to 10 volt DC and enclosed in the correct size cavity (resonator). An 8 to 3 terminal regulator can be used to get this voltage from a car's 12v system. However, the correct construction and tuning of the cavity is difficult without good microwave measurement equipment. Police radars commonly operate on the K band at 22 GHz. Or more often on the X band at 10«25 GHz. most microwave intruder alarms and motion detectors (mounted over automatic doors in supermarkets & banks, etc.) contain a Gunn type transmitter/receiver combination that transmits about 10 kilowatts at 10«25 GHz. These units work perfectly as jammers. If you cannot get one locally, write to Microwave Associates in Burlington, Massachusetts and ask them for info on 'Gunnplexers' for ham radio use. When you get the unit it may be mounted in a plastic box on the dash or in a weather-proof enclosure behind the PLASTIC grille. Switch on the power when on an open highway. The unit will not jam radar to the side or behind the car so don't go speeding past the radar trap. An interesting phenomena you will notice is that the drivers who are in front of you who are using detectors will hit their brakes as you approach large metal signs and bridges. Your signal is bouncing off of these objects and triggering their radar detectors!

Seems the reference to K and X bands makes it a little outta date. Wouldn't the cops start raking more money in if they suddenly changed to the 'door opening' radar bands while people set them to ignore... hehehehe :whistle: hope noone gets any ideas.

Hopefully this helps
-Tristan

[igor]

for christs sake man ya ride a BMW what tje hell do ya need a detector for

[gman]

what you need is something that absorbs rader energy and laser energy.something that stops them getting a fix on you.no fix no reading.stop trying to over engineer it and it becomes simple.

[Jeremy]

What speeds you talkin' 'bout? Relativistic? You have FTL drive on bike?
Do you find time dilation a problem?
"I went out for a ride .When I got home the Apes had taken over Earth!"
Don't think you'll have a problem with doppler effect ,red shift,blue shift etc on a terrestrial vehicle . :killingme

The doppler effect at 300km/h is ~1.00075, sure it doesn't seem like much however your allready trying to detect a very faint signal that lies with a very narrow band. And the shift is enough to require compensation. They have to take it into account with digital signal transmission when they're launching satellites and stuff, otherwise the signal gets all screwed up as well.

[Slingshot]

I'd be interested in hearing from the coppers on this site that have had experience using a laser to ping a bike. I've got a few questions...

What part of the bike is generally preferred to target?
At normal operating range, how much of a bike would you see through the scope?
In your experience, does the colour of the bike/car have any impact on the ease of locking onto the target?
Likewise, matt vs. gloss paint...any difference?

[250learna]

On that reflection type thingy, get some shiny shiny plastic type stuff (forgot name) and put it over the licence plate, will save you tickets from flashers.

(due to reflection delay etc, so all they see is a white feedback produced by the flash, no matter what - and it is still fine for anyone following directly behind you such as the police and such)

No I dont do this :lol:

yeah but its against the law to cover the plate with that stuff, just like the reflective spray that they sell in cans... so you mite get a ticket from a patrol car :eyepoke:


A bloke down the pub told me that many of the nations police coughiffers may or may not be slowly migrating over to a new radio system soon. A digital one. This 'guy' told me that the system may or be transmitting AVLS (advanced vehicle loaction system, similar to GPS) information, information that is sent by the police vehicle, over the radio system to their respective HQs informing the dispatcher where, within 10 metres, each vehicle is.

Now imagine that you had access to an AVLS/radio decoder..........if only I could remember the 'blokes' name.
I wouldnt be surprised, Wellington combined taxis do that with their whole fleet bout 400cars i think. They know exactly where you are when you are loged on.

thats my 2c anyhoo

[250learna]

but who need to avoid the cops at high speeds... have fun and play with them :Punk:

[Biff]

This has already happened in Northants, UK. They are supposed to be un-scanable. It works on a similar system to mobile phones, I think. In fact the handset is quite like a mobile with extra features on it.

I can neither confirm nor deny I led the project team responsible for selling your force, in fact the entire UK police force, the digital radio service (they don't own it) that you're referring to. It's a Tetra based technology operated by Airwave (part of 02).

Thankfully NZ police have opted for a different digital radio standard as Tetra is pretty lame. It is ‘scannable’ if you have access to a Tetra scanner (www.tetrascanner.com) and access to their algorithm - allegedly. And no - I couldn't possible tell you where to get hold of this algorithm, cos that would be illegal, and you might be a :raghead: (please don't take offence - but I've always wanted to find a use for this smiley).

Your force uses Sepura SRP2000 handsets I believe, and you're right - they do look a like mobile phones, but are more feature rich, and bloody expensive in comparison.

I be a hexpert on these things ya know. I just love waffling on about things I know about and showing off!

[Sniper]

but who need to avoid the cops at high speeds... have fun and play with them :Punk:

Nice, where did you get that?

[250learna]

Nice, where did you get that?
http://www.linienmc.dk/mc-uheld/2003%20feb/13mb_336kmh_playing_with_swedish_police.mpeg
its bout 13mb woth, but its worth it :niceone:

[Krusti]

Have a read through here....http://www.radarjammertechnology.com/index.php

[Stevo]

This is interesting
http://www.radar.co.nz/nz/report1.html

[Zapf]

you think you would be able to buy cheap radar absorbing material from china these days :P

[Stevo]

you think you would be able to buy cheap radar absorbing material from china these days :P
Close I have just found a laser equivalent of what you have suggested! I have found these two very in depth (but if you have a spare quarter hour) well worth reading sites even if they are American.
http://www.speedzones.com/
http://motorcycleinfo.calsci.com/Electronic.html#Radar
The second one here is not quite as good.